Canada has had TSOs since ~2000. They were first instituted in Quebec where there are now 54 TSOs. In Quebec a technologist TSO is always paired with nurse (RN) TSO. The situation varies in other provinces, with technologists forming the majority, also sometimes responsible for lab quality assurance. We've had a mailing list since 2000 and a website since 2002 (I'm the webmaster, list manager): http://www.transfusionsafety.ca/
For interest, sample job descriptions:
http://www.transfusionsafety.ca/about-tso.html
Cheers, Pat
http://www.ualberta.ca/~pletendr/